Inside the AI Factory: How CPUs and Memory Limit GPU Inference at Scale
BenBajarin · x · 2026-09-23
Creative Strategies analyst Ben Bajarin published a CS Atlas note detailing how CPU + GPU + memory + interconnect (the scale-up domain) jointly serve inference at scale. Key point: even though models run on GPUs, user capacity is constrained by both GPU throughput and CPU execution capacity—so adding CPUs can raise an AI datacenter's output. Uses a factory analogy to explain each component's workload limits.
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